Low elo compared to High elo
High elo (from my observations throughout the forum) also know what low elos feel. Well thats what they can say because they are better, low elos experience so many stupid things such as AFK, Trolls, Stupid build, Ap champs doing ap, or ad champs that do AP, champions that arent used at all such as urgots (certain lose).
When a low elo asks for advises or something, here comes the high elos (LIKE A BOSS) saying your terrible blah blah blah... As they are higher than you they can say anything that they are right just because they are better (witch can also be a bought account from ebay or whatever).
Dont rely on asking questions (this is just an opinion).